Minor cosmetic enhancement to provide a more readable repr()esentation of Extension instances:
Minor cosmetic enhancement to provide a more readable repr()esentation of Extension instances:

- <distutils.extension.Extension at 0x2b2088b79b00>
+ <distutils.extension.Extension('_struct') at 0x2b2088b79b00>

pypa/setuptools,pypa/setuptools,pypa/setuptools